Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 7/16 ", 5/8 ", 1-3/8 "
1/2, 1/4, 3/8, 2-1/2, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
21 mm, 16 mm, 3/4 in, 9/16 in, 5/16 in, 3-3/8 in
External Torx, 12-Point, 8-Point, 7-Point, 4-Point
-